Problems

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Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 6233 927 15% 0.01 1222 626 51% 6.7
10 Kinds of People 11484 2404 21% 0.01 2020 1385 69% 5.0
2048 6324 2984 47% 0.00 2875 2450 85% 2.5
3D Printed Statues 6465 3016 47% 0.00 2861 2569 90% 1.9
3D Printer 546 109 20% 0.00 209 86 41% 8.4
3-Sided Dice 1974 181 9% 0.00 320 123 38% 8.5
4 thought 6315 2134 34% 0.00 2132 1778 83% 2.9
A1 Paper 4154 1245 30% 0.00 1214 963 79% 3.6
Aaah! 21865 10314 47% 0.00 9211 8573 93% 1.5
Abandoned Animal 1306 269 21% 0.03 323 235 73% 5.1
ABC 8894 4096 46% 0.00 3921 3571 91% 1.7
Ab Initio 355 73 21% 0.10 60 44 73% 7.2
Above Average 5350 2240 42% 0.00 2237 2009 90% 1.9
A+B Problem 6139 610 10% 0.03 865 293 34% 8.3
A Brief Gerrymander 180 40 22% 0.15 42 25 60% 8.4
Abstract Art 228 66 29% 0.00 65 49 75% 6.2
Absurdistan Roads II 514 191 37% 0.00 185 128 69% 6.7
Absurdistan Roads III 1299 357 27% 0.02 346 263 76% 5.5
Access Points 221 93 42% 0.01 79 62 78% 5.5
A Classy Problem 7370 1910 26% 0.01 1643 1268 77% 4.5
ACM Contest Scoring 5288 3348 63% 0.00 2929 2764 94% 1.6
Adding Words 7805 1844 24% 0.00 1804 1375 76% 4.0
A Different List Game 5879 404 7% 0.00 720 147 20% 9.1
A Different Problem 22990 8828 38% 0.00 8173 7093 87% 2.1
Adjoin the Networks 1539 417 27% 0.00 369 288 78% 5.7
Administrative Difficulties 921 210 23% 0.03 228 151 66% 6.5
Advanced Causal Measurements 55 16 29% 0.10 21 16 76% 7.3
Adventure Begins 173 56 32% 0.06 64 48 75% 4.1
Adventures in Moving -- Part IV 759 234 31% 0.00 209 183 88% 4.2
A Favourable Ending 1320 340 26% 0.00 317 237 75% 4.7
A Feast For Cats 1736 593 34% 0.00 400 335 84% 4.3
Air Conditioned Minions 3838 1078 28% 0.00 1113 846 76% 3.1
Airline Hub 1586 278 18% 0.01 314 172 55% 6.9
Airport Coffee 729 162 22% 0.09 151 113 75% 6.5
Airport Construction 2884 380 13% 0.02 311 163 52% 7.5
Airport Logistics 49 12 24% 0.00 18 12 67% 7.4
Airports 329 99 30% 0.11 98 72 73% 6.2
Akcija 5342 2345 44% 0.00 2117 1868 88% 2.2
Aladin 737 69 9% 0.10 114 22 19% 8.9
Alchemy 95 15 16% 0.03 27 15 56% 8.2
Alea iacta est 29 11 38% 0.34 14 11 79% 6.9
Alice in the Digital World 2300 644 28% 0.01 643 503 78% 4.1
Alien Codebreaking 131 6 5% 3.23 18 4 22% 8.9
Alien Numbers 1830 956 52% 0.00 927 844 91% 2.0
A List Game 6378 1908 30% 0.00 1844 1551 84% 2.9
All about that base 2549 998 39% 0.00 969 810 84% 3.1
All Different Directions 968 420 43% 0.00 392 339 86% 2.7
Allergy Test 389 117 30% 0.00 122 65 53% 7.5
All Friends 798 156 20% 0.00 141 75 53% 8.5
All Just A Dream 1627 377 23% 0.05 253 179 71% 6.5
All Pairs Shortest Path 7245 1288 18% 0.02 864 608 70% 5.8
Almost Perfect 5507 1281 23% 0.00 1365 1073 79% 3.6
Almost Union-Find 5338 947 18% 0.02 840 483 57% 6.6
Alphabet 1044 512 49% 0.00 516 439 85% 3.0
Alphabet Spam 5930 3807 64% 0.00 2988 2877 96% 1.3
Alternative Bracket Notation 200 81 40% 0.00 87 71 82% 5.4
Altruistic Amphibians 347 81 23% 0.24 79 56 71% 5.1
Amalgamated Artichokes 3348 1504 45% 0.01 1356 1178 87% 2.8
Amanda Lounges 1259 354 28% 0.03 324 256 79% 5.4
A Mazing! 1736 417 24% 0.09 197 148 75% 5.3
Amazing Adventures 155 45 29% 0.03 52 35 67% 6.1
Amazing Race 259 68 26% 0.39 76 55 72% 6.6
Ambiguous Result 207 49 24% 0.03 74 47 64% 7.6
Amsterdam Distance 1124 491 44% 0.00 532 438 82% 2.8
A Multiplication Game 500 153 31% 0.00 176 131 74% 4.7
Anagram Counting 2784 1079 39% 0.00 1030 857 83% 3.0
Andrew the Ant 231 66 29% 0.06 77 58 75% 4.9
A New Alphabet 8900 4048 45% 0.00 3789 3506 93% 1.8
An I for an Eye 339 88 26% 0.00 94 73 78% 4.3
Animal Classification 1500 343 23% 0.03 290 191 66% 6.5
An Industrial Spy 1353 702 52% 0.02 550 471 86% 3.2
Another Brick in the Wall 2481 1186 48% 0.00 1154 1054 91% 1.9
Another Candies 6431 1712 27% 0.00 1811 1478 82% 3.1
Another Dice Game 85 62 73% 0.00 55 51 93% 3.4
Another Query on Array Problem 1238 156 13% 0.05 262 110 42% 7.8
Antenna Placement 29 17 59% 0.00 9 7 78% 6.9
Anthony and Cora 668 177 26% 0.00 212 147 69% 5.5
Anthony and Diablo 1942 680 35% 0.00 746 646 87% 2.4
Antiarithmetic? 1093 205 19% 0.01 264 149 56% 7.2
Ants 2843 1278 45% 0.00 995 884 89% 2.4
Apaxiaaaaaaaaaaaans! 9611 5863 61% 0.00 5294 5070 96% 1.4
Apostrophe Catastrophe 63 16 25% 0.00 16 10 62% 6.5
Appalling Architecture 227 68 30% 0.00 78 66 85% 4.0
Apparatus 641 163 25% 0.01 126 96 76% 5.2
Apple Market 448 90 20% 0.07 106 56 53% 8.1
Apples, Cherries, and Mangos 373 117 31% 0.02 113 85 75% 5.8
A Prize No One Can Win 755 322 43% 0.00 284 249 88% 2.5
Aquarium Tank 459 124 27% 0.00 120 93 78% 5.5
Aqueduct Construction 157 60 38% 0.01 46 40 87% 5.7
A Question of Ingestion 1109 273 25% 0.00 252 191 76% 5.8
Arable Area 237 57 24% 0.04 59 37 63% 7.5
Arachnophobia 264 79 30% 0.14 74 61 82% 4.7
A Random Problem 127 25 20% 0.00 31 20 65% 8.1
A Rational Sequence 1379 466 34% 0.00 499 364 73% 4.7
A Rational Sequence 2 1791 1321 74% 0.00 1166 1120 96% 1.5
A Rational Sequence (Take 3) 697 592 85% 0.00 468 454 97% 1.7
Arbitrage? 1758 357 20% 0.02 265 212 80% 3.7
Arcade! 1134 206 18% 0.01 199 141 71% 6.3
Arctic Network 1348 475 35% 0.00 421 336 80% 4.5
A Real Challenge 6449 3101 48% 0.00 3005 2809 93% 1.6